US406381A

US406381A - Carriage-jack

Info

Publication number: US406381A
Authority: US
Publication date: 1889-07-02
Anticipated expiration: 1906-07-02

Description

' A. ZIMMERMAN.

CARRIAGE JACK.

No. 406,381. Patented July 2, 1889..

UNITED STATES PATENT OFFICE.

ARTHUR ZIMMERMAN, OF ST. LOUIS, MISSOURI.

CARRIAG E-JAC K.

SPECIFICATION forming part of Letters Patent No. 406,381, dated. July 2, 1889.

Application filed February 14, 1889. Serial No. 299,828. (No model.)

To all whom it may 0072007 71.-

Be it known that I, ARTHUR ZIMMERMAN, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Carriage-Jacks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This belongs to the class of jacks in which the lever takes such position, when down, as to sustain the liftingframe without any other locking device.

Figure I is a perspective view of the jack. Figs. II and III'are detail sections, showing the parts in different positions. Fig. IV is a detail side View.

1 is the foot.

2 is the standard.

3 is the lifting-frame, having a number of steps 4, for engagement beneath the axle of a carriage, wagon, or other wheeled vehicle or machine. The lifting-frame has flanges 5, which are engaged byhooked lugs 6 cast upon or otherwise attached to the standard, such lugs forming guides for the lifting-frame in its vertical movements.

7 is a screw or stud, which limits the ascent of the lifting-frame by contact with one of the lugs 6.

8 is a hand-lever, whose end is pivoted at 9 to a lug 10 on the upward projection 3 of the lifting-frame, the end of the lever being slotted at 11 to receive the lug and to give place to a horn 12, which projects from the upper part of the standard. The upper side of the horn is inclined upwardly from the standard and gives bearing to a fulcrum-pin 13, which moves endwise on the born as the lever is operated to lift or lower the frame 3. The inclination of the bearing-edge of the horn 12 and relative position of the pivot 9 and pin 13 are such that when the lever is in its lower position, as seen in Figs. I and III, it serves to hold up the lifting-frame, as no amount of weight upon the frame will slide the fulcrum-pin 13 up the inclined horn 12.

In Fig. IV the fulcrum-pin 13 carries an anti-friction roller 14, which runs on the horn 12 in raising and lowering the lifting-frame. The relative position of parts andinclination 0f the horn are such that when the lever 8 is in the lowerposition the frame 3 is sustained, as before described.

I claim as my invention- 1. The combination of the standard 2,'having a horn 12 at its upper end formed with an inclined upper side, the lifting-frame 3, having an upward projection 3, provided with a lug 10, and the lever 8, formed with a slot 11, through which the horn projects, -pivoted to the lug and provided with a fulcrumpin 13, substantially as described.

2. The combination of the standard 2, having a horn 12 at its upper end formed with an inclined upper side, and hooked lugs 6, the lifting-frame 3, having flanges 5, upward projection 3", and lug 10, and the lever 8, having slot 11 pivoted to the lug and provided with a fulcrum-pin 13, substantially as described.

ARTHUR ZIMMERMAN.

In presence of EDW. S. KNIGHT, THOMAS KNIGHT.